Match the List-I with List-II
| List-I | List-II | ||
|---|---|---|---|
| Instruments | Measurements | ||
| A. | Odometer | I. | Wind |
| B. | Screw gauge | II. | Thickness |
| C. | Seismograph | III. | Speed |
| D. | Anemometer | IV. | Earthquake |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → A-III, B-II, C-IV, D-I
(A) Odometer — this matches (III) Speed, by elimination: the other three entries are taken by the other instruments. An odometer does not measure speed; it records the distance travelled by a vehicle.
(B) Screw gauge — this matches (II) Thickness. A screw gauge measures very small lengths, such as the thickness of a sheet or the diameter of a wire, to a hundredth of a millimetre.
(C) Seismograph — this matches (IV) Earthquake. It records the vibrations of the ground (seismic waves) during an earthquake.
(D) Anemometer — this matches (I) Wind. Its spinning cups measure the speed of the wind.
Note: It seems that there is a mistake in the original NTA paper, which matches Odometer with Speed; it should have been the speedometer, which shows a vehicle’s speed. Option (1) is still the only possible answer, because C-IV (Seismograph – Earthquake) appears only in Option (1).